Mr Johnson had a plot of garden that is 7 m by 7 m. He wanted to put a fence
around the whole garden . He needed an extra of 3.4 m of fence. What is the
length of fence that he had?

Mr. Johnson's garden is a square with dimensions of 7 meters by 7 meters.

1. **Perimeter of the garden:**  
Since it's a square, the perimeter $ P $ is calculated by:

\[
P = 4 \times \text{side length}
\]

Substituting the side length:

\[
P = 4 \times 7 = 28 \, \text{meters}
\]

2. **Extra length of fence:**  
He needed an extra 3.4 meters of fence. So, the total length of fence is:

\[
\text{Total length of fence} = 28 + 3.4 = 31.4 \, \text{meters}
\]

Thus, the total length of the fence that Mr. Johnson had is **31.4 meters**.

Would you like further details or clarification?

Here are five related questions for further understanding:
1. How would the perimeter change if the garden was rectangular?
2. If the fence costs $5 per meter, what would be the total cost for 31.4 meters?
3. What would the total fence length be if the garden was 10 m by 10 m?
4. How much extra fence would be needed if the garden size doubled?
5. What would happen to the perimeter if each side increased by 2 meters?

**Tip:** For any square or rectangular plot, the perimeter is always the sum of all the sides.

Mr Johnson had a plot of garden that is 7 m by 7 m. He wanted to put a fence around the whole garden. He needed an extra of 3.4 m of fence. What is the length of fence that he had?

Learn how to calculate the perimeter of a square garden with side lengths of 7 meters and an additional 3.4 meters of fence. This problem covers the concept of perimeter calculation and addition, suitable for students in Grades 4-6.

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